Cleaning and stripping is electroplating only if associated with (i.e., in line or contiguous with) other electroplating operations. Wastes from printed circuit board manufacturing can be F006 if electroplating operations are involved. Stripping solutions or baths can be electroplating wastewaters. Photoresist solids or "skins" filtered from stripping solutions in the printed circuit board industry can be F006 sludges.